Which of these test samples are light sensitive?

Bilirubin is indeed a light-sensitive analyte. When exposed to light, bilirubin can undergo photo-degradation, which alters its chemical structure and affects the accuracy of test results. It is crucial to protect bilirubin samples from light exposure, typically by using dark tubes or covering them with aluminum foil during storage and transportation. This ensures that the sample remains intact and that the test yields an accurate measurement of bilirubin levels in the patient’s blood.

In contrast, the other substances listed—creatinine, hemoglobin, and glucose—do not share the same sensitivity to light. They can be processed and stored without special light protection, making them easier to handle in clinical settings. Understanding the specific requirements for different test samples is essential for accurate laboratory results and effective patient care.